Lantern.



PATENTED AUG. 21

W. S. HAMM.

LANTERN. APPLICATION FILED NOV. 2, 1904.

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No. 829,331. PATENTED AUG. 21, 1906.

W. s. HAMM.

LANTERN.

APPLICATION FILED NOV. 2, 1904.

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UNITED sTA'rns PATENT orrion.

I/VILLIAMS. HAMM, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE ADAMS ANDWESTLAKE COMPANY, OF ILLINOIS.

LANTERN.

Specification of "Letters Patent.

Patented Aug. 21, 1906.

Application filed November 2,1904. Serial No. 231,104.

ToaZZ whom it may concern:

Be it known that I, WILLIAM S. HAMM, a citizen of the United States,residing at Ohicage, in the county of Cook and State of Illinois, haveinvented new and useful Improvements in Lanterns, of which the followingis a specification.

This invention relates to means whereby the extinguishment of the flameis prevented as'the lantern is raised, lowered, or swung, as

in the actions of signaling, 01 when subjected to a sudden jerk or jar.

Heretofore when a railroad hand-lantern of the general class to whichthis improvement belongs but unprovided with my invention was subjectedto jerks or jars the flame was immediately extinguished, the consequenceoften being that great danger resulted by the-failure of a signal to actat a critical moment, and, in fact, all lanterns, with the exception ofcertain of the tubular type, were exposed to this danger, the causebeing that when the lantern was jerked or jarred the air was caused tomove toward the top of the lantern and rush past the flame, therebyrobbing the flame of the amount necessary to support combustion. I havetherefore invented a device whereby air-currents entering the perforatedhoop of the lantern at all times sufficiently feed the flame regardlessof the sudden jerks or jars to which the lantern is liable to besubjected, and especially prevents a vacuum at the combus- I tion-point,which necessarily results in the immediate extinction of the flame.

In the accompanying drawings, Figure 1 is a vertical section of alantern, showing my invention. Fig. 2 is a plan thereof. to 8, bothinclusive, show modifications.

Similar reference characters indicate simi- 7 lar parts in therespective figures.

Referring more particularly to Figs. 1 and 2, 1 is the base-of thelantern, to which are attached guard-wires 2, connected with the annularhoop 3 in any suitable manner, the

wires extending upwardly to form the cor-j pensed with.

rect shape of the guard and uniting with the series of horizontal rings4.

in the wall of which is a slot 7 of a bayonet- Figs. 3

To the upperf one of the latteris hinged the cap 5. Formed at'the lowerpart of the oil-pot 6 is a cup 6, 1

8, the free end of the spring being adaptedto fitover a pin 9,projecting from the hoop 3 and the slot 7 over a similarly-projectingpin9 The hoop above the cup 6 which fits over it, is furnished with a rowof perforations 10, through which the necessary supply of air isadmitted to the interior of the globe 11 and to the flame to sustaincombustion.

A represents a cap having an outer flange 12, which rests upon the upperedge of the hoop 3. The cap is furnished with a shoulder 14, which fitsthe interior of the hoop, and with a solid skirt 15. The top of the capis perforated at 16, so as to fit in close proximity to the top of theburner-body, a space 19 being left between the cap and the burner forthe admission of air into direct or intimate union with the flame. Inthis form of my invention the opening through which the air is thusadmitted to the flame is provided by making the opening in the caplarger than the diameter of the part 20 of the burner; but an equivalentconstruction is seen in Figs. 3, 4, and 6, in which the air is admittedto the flame by means of a row of perforations 19 near said part of theburner. In each form the air is deflected and carried by the skirtthrough the opening or perforations into intimate union or contact withthe flame, the operation in each case being substantially identicalthatis to say, as the lantern is jerked or jarred the air entering theperforations 10 in the hoop 3 instead, as would be the case were the capA not used, of rushing up through the top of the lantern and robbing theflame of the air necessary to support combustion is directed or'deflected to thepoint of combustion, thus preventing a vacuumat thatpoint and supplying the necessary air for the maintenance of the flame.

In Fig. 5 holes 17 are shown in the-cap A atv the base of the skirt,their function being to admit air to the interior of the globe to keepit from heating. These holes may be used with the cap in all of theforms shown, or dis As thus far described the cap A is intended to beremovable from the body of the lantern as a separate adjunct thereto, itbeing clamped between the hoop and the globe ,but in Fig. 6 the cap isshown permanently fixed. to the lantern-body. When so used, air-openingsmay be employed in either of the forms here inbefore described.

In Fig. 7 the invention is shown used with that form of globe in whichthe lower flange is dispensed with.

While, as shown, the cap forms a convenient seat for the globe,,it isobvious that it is .not necessary it shall be constructed to serve suchpurpose. For example, the upper edge of the body-hoop may be made toform the seat for the globe and the cap may be attached to the body-hoopin any manner permitting of the performance of the functions hereindescribed. Such a construction is shown in Fig. 8, in which the annularhoop 3 is offset at 3 there being formed a seat for the shoulder 14 ofthe cap A, and the upper portion 3 of the hoop constituting a seat forthe globe.

Having thus described my invention, I claim 1. In a lantern, aperforated body-hoop and an oil-pot and its burner supported thereby, anannular space being left between the hoop and the oil-pot, combined witha cap having at its top means for admission of air into close proximity,to the point of combustion, and walls for deflecting currents of airreceived within the hoop to that point, substantially as set forth.

2. In a lantern, a perforated body-hoop and an oilpot and its burnersupported thereby, an annular space being left between the hoop and theoil-pot, combined with a cap having at its top means for admission ofair into close proximity to the point of combustion, and walls fordeflecting currents of air received within the hoop to that point, saidcap being further provlded with means for admitting air from within thehoop to the interior of the globe for the purpose of preventingoverheating of the latter, substantially as set forth.

8. In a lantern, a perforated body-hoop and an oil-pot and its burnersupported thereby, an annular space being left between the hoop and theoil-pot, combined with a cap forming a seat for the globe and having atits top means for admission of air into close proximity to the point ofcombustion, and walls for deflecting currents of air re ceived withinthe hoop .to that point, substantially as set forth.

4. In a lantern, a perforated body-hoop and an oil-pot and its burnersupported thereby, an annular space being left between the hoop and theoil-pot, combined with a cap forming a seat for the globe and having atits top means for admission of air into close proximity to the point ofcombustion, and walls for deflecting currents of air received within thehoop to that point, said cap being further provided with means foradmitting air from within the hoop to the interior of the globe for thepurpose of preventing overheating of the latter, substantially as setforth.

5. In a lantern, a perforated body-hoop and an oil-pot and its burnersupported thereby, an annular space being left between the hoop and theoi1-pot, combined with a cap having a solid skirt portion and a topproviding means for admission of air into close proximity to the pointof combustion, the oil-pot and cap furnishing surfaces for deflecting orupwardly guiding currents of air received within the hoop to that point,substantially as set forth. I

6. In a lantern, a perforated body-hoop and an oil-pot and its burnersupported thereby, an annular space being left between the hoop and theoil-pot, combined with a cap forming a seat for the globe and having asolid skirt portion and a top providing means for admission of air intoclose proximity to 1 the point of combustion, the oil-pot and capfurnishing surfaces or walls for deflecting or upwardly guiding currentsof air received within the hoop to that point, substantially as setforth.

7 In a lantern, a perforated body-hoop and an oil-pot and its burnersupported thereby, an annular space being left between the hoop and theoil-pot, combined with a cap forming a seat for the globe and providedwith a solid skirt portion and a top furnishing means for admission ofair into close proximity to the point of combustion, the oil-pot and capconstituting walls or surfaces for deflecting or upwardly guidingcurrents of air received within the hoop to that point, said cap beingfurther provided with means for admitting air within the hoop to theinterior of the globe for the purpose of preventing overheating of thelatter, substantially as set forth.

8. In a lantern, a perforated body-hoop and an oil-pot and its burnersupported thereby, an annular space being left between the hoop and theoil-pot, combined with a cap forming a seat for the globe and providedwith a solid skirt portion and a top furnishing means for admission ofair into close proximity to the point of combustion, the oil-pot and capconstituting walls or surfaces for deflecting or upwardly guidingcurrents of air received within the hoop to that point, said cap beingfurther provided with means for admitting air within the hoop to theinterior of the globe at its base for the purpose of preventingoverheating of the latter, substantially as set forth.

In testimony whereof I aflix my signature in presence of two witnesses.

WILLIAM S. HAMM.

Witnesses:

EDGAR ANDREWS, P. G. EMERY.

